Model: DDR2 SODIMM Capacity: 2GB Frequency: 667MHz Working Voltage: 1.8V Function: DDR2 200PIN Scope of Application: Laptop Memory RAM Pins: DDR for Desktop: 184 pins DDR for Laptop: 200 pins DDR2 for Desktop: 240 pins DDR2 for Laptop: 200 pins DDR3 for Desktop: 240 pins DDR3 for Laptop: 204 pins Read First: XP system recognizes approximately 3GB Windows 7 32-bit system recognizes approximately 2.26-4.5GB Windows 7 64-bit system recognizes approximately 8-16GB Before purchasing memory, please confirm the compatible model for your desktop or laptop. Common models are as follows: PC2 4200 = DDR2 533MHz PC2 5300 = DDR2 667MHz (Compatible with DDR2 533MHz) PC2 6400 = DDR2 800MHz (Compatible with DDR2 667MHz, DDR2 533MHz) PC2 8500 = DDR2 1066MHz Color: Green Material: PCB Size: 7 x 3cm Package Contents: 1 x Memory Module Note: Products from different batches may vary slightly in appearance. Color may vary randomly and cannot be specified. This does not affect functionality. The package includes only the items listed above; other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error is +/- 1-3cm.